general problems of the 2015 Mercedes Benz C300 - part 2

Driving down the interstate and half of the stationary roof panel dislodged. Luckily no accidents occurred due to the malfunction. The other half is still loosely attached and I am worried it could cause an accident if it detaches . I have emailed and called headquarters as well as my local dealership and no one has the ability to fix the problem and cannot confirm if I choose to pay out of pocket, that I will be reimbursed. There is a recall and it’s #21v197. At this point I want some sort of solution so I can ensure the safety of myself and those driving around me.

Check engine light keeps coming on/ fowl order coming from ac unit/ loud gas smell when start ignition in the morning.

Sunroof no longer closed shakes and rattles, seems like a safety issue during a possible rollover.

When driving on the bridge the piece of my sunroof flew off I pulled over it was raining and the inside of my car got wet the motor on my sunroof no longer works as the water leaked through. I picked up as much of the pieces as I could but the part was run over.

The vehicle was thankfully noy in mption when my panarama sunroof and the shades failed. The shades I understand its not a safety problem, but the sunroof not being able to hold in place as it opens is different. When the sunroof opened, the rear of the roof was not in place and shaky. When I tried to close, it had not locked itself right back in place, where I had to take it to a mechanic just to have it shut to avoid the rainstorm yesterday. I recently did some research and read through some articles, had a friend of mine take a look at it and it seems to be very similar, almost the same as the recall they have done on other year make for the panarama roof.

Engine light fault po52e crankcase ventilation valve fault mechanic decline repairing. Said its a common problem or defect in all C300 Mercedes Benz.

My panarama sunroof just fail and almost collapse on me. My car is 5 years old. I was driving and it appear the glass was coming out. The vehicle was stationary. I'm afraid that the glass will pop out and fall on me. This is serious. It could harm me if it falls on me.

I was driving on 02/13/2020, about to cross the arkansas/tennessee bridge when my sunroof exploded without an explanation. The entire panoramic sunroof shattered. It was the most frightening thing I have ever experience. If my sunroof screen had been open, all of the glass would have fallen on my head and in my eyes. Called the mb dealer for help, they weren't willing to help and suggested that I file it with my own insurance company. This is a defect of mb!!.

Sunshade on panoramic sunroof broke off and tore sunshade. Took it to mb service center and was told it is known issue for that model and many more with some part snapping off causing the damage and cost to repair is between 2500-3000. Have been reading online and lot of people seem to have same issue with the panoramic sunroof and shade not syncing together. Seems to be concern manufacturer should be looking at if there’s numerous vehicle with same issues. Part snapped off when trying to open up sunroof on hot summer day.

The panoramic sunroof is faulty. Doing a simple search online showed that this is a common problem amongst my vehicle model where parts are loose or misinstalled and it is a safety concern in a potential accident or rollover. My dealer is now looking into it and it is also an excessive out-of-pocket cost to make the vehicle safer. Something I do not expect from a high-end vehicle manufacturer. I identified this due to the rattling sound in the ceiling/sunroof.

Speakers randomly stop working - sometimes for a few hours and other times for up to 5 days. When speakers are not working, this means the stereo, navigation, bluetooth calls, and emergency calls are inaccessible. This is a problem for many drivers please click on the link below. Https://mbworld. Org/forums/c-class-w205/701679-stereo-issue-my-2015-c300. Html.

Car looses speed while driving in the street or a highway. No code have been detected in the computer. I have been taking the car to the dealership but they haven't found what's the problem.

The panoramic sunroof of the C300 is held in plastic hooks that break, even with normal use. So, that leaves the panoramic roof to fly off the vehicle on the highway. I have not opened my roof in three years because I am afraid it might not hold up. Looking at the mb owners' forum, it seems to be a pretty common issue that these plastic hooks break, and then the panoramic roof either doesn't close all the way, stay up to let the air come underneath it to introduce the risk of it flying away, or become really flappy when driving with open roof.

There is a serious problem with the vehicle mentioned above. The entertainment system and the rear camera do not work. This is a serious safety concern regarding the rear camera. The c-class is designed in such way that you depend on the camera when reversing and it is very difficult to see the rear view when backing and looking from all angles. I called your hq in maryland for assistance, they were unaware of potential reported problems. Their best answer was to call the dealership. The following day, I received a phone call from new country motor cars Mercedes Benz of hartford, CT stating that they have not heard of this problem and its very unlikely that it was associated with the recent recall regarding this vehicle. Upon arrival, and retelling my story to the service advisor helder crespo, he told me that their received numerous complaints about this particular vehicle make and that other customers are affected by this similar problem. It been three weeks, I have not heard anything from mb or dealership. I am quiet appalled by this matter and shocked by the improper communication from mb to their loyal customers. Is this 'the best of nothing' customer relation?! I am extremely dissatisfied how this matter is being handled and that not even one single person who knew about this issue did not even apologize for the inconveniences that this had cased me.

Entertainment unit does not work at all. Happened out of nowhere one day turned on the car and it was frozen. Back up camera 9/10 times does not work and when it does it turns on after you have backed up and are already going forward. Unit freezes unable to change or do anything to the unit itself. Occasionally a blue screen pops up for 1-2 seconds and goes to the initial start up screen for a while. I went to my local dealership and the admitted of hearing about this problem from other owners with the same issue and said there was nothing that could be done cause they have no idea how to fix it, I mean that's absurd.

Dont know which category it falls. I bought this car in August 2015. In one week it would not start even. Towed to dealership and they said, the grounding screw was loose. I am so surprised that a car comes out from factory with a loose grounding issue. In the last 2 weeks, the car just stalled at the signal. All lights came up. I had the eco start/stop mode on. This happened 3 times and finally I shut the eco start/stop mode down. It is so dangerous that in heavy traffic, when people are ready to drive on change of signal, the car wont move, people are honking and frustrated and I am too. Looked online and so many people are complaining the same. The whole of dashboard lights up like when a car stalls. This is very dangerous. Anybody waiting behind you can take the pedal from the brake and smash into you. Similarly, for last 2 months, I have noticed that there is a jumping nature when you take leg of the brake at the signal. That scares me as well. From the feel of it, I feel this is primarily a software issue where the computer thinks it is in some mode when it is not or something and shuts everything down as a precautionary measure or something.

Collision assist inoperative dash light came on while highway driving followed by a loss of power and acceleration. Vehicle needed to be turned off and restarted to be drivable.

Windows rattling , they said this problem is known , I took my car 4 times to get it fix but no lick. This is very bad when you are driving.

Nhtsa recall #17v114 starting current limiter our mbenz C300-2015 model has been recalled and needs to be repaired. Its more than 60 days since the issue is known but the repairs are still not available. This thing can be dangerous to our life and needs to be fixed ASAP.

I heard a very big devastating noise while driving my 2015 Mercedes Benz-c300 on a local road in raleigh, nc at about 40 mph. Since I did not see any tpms (tire pressure monitoring system) or any other kind of alert on the screen, I continued to drive. After driving about 2 more miles, I heard another big pop and the car became non-drivable by then. I did not feel hitting any object or going thru a pot hole. That¿s when I got down the car and noticed the right front tire outer wall got separated from the tire and the the tire was just flat to the ground. I could not, of course, drive further. This happened on Saturday (10/1/16) evening and it is a run-flat tire, but could not drive further and there was no spare in the car. So, I had to wait until today (10/3/16) to get it towed to the nearest benz dealer in raleigh to get the tire replaced. It was a very frustrating half a day attending to this repair. There are a couple of issues here. (a) quality issue: why the continental tire tire gave away so quickly with only about 23. 5k miles on the odometer, without hitting any object? (b) safety issue: this would have been a disaster if I were on a road trip with family on a national highway, especially, on a Saturday evening without a spare tire. (c). System response issue: why mb system did not give any kind of alert in spite this major blow-out? I would hesitate to buy another car without a spare tire. I hope the NHTSA will consider seriously discouraging run-flat tires in the cars unless a spare tire is provided, until such time the run-flats are extremely safe and sturdy. Thanks.

Multiple incidents of 'collision prevention assist plus inoperative'. Car loses all power until restarted. This happened several times, once on an interstate at 65 mph creating a dangerous situation. I had to pull over several lanes on the interstate with no power while other cars had to avoid me. I brought the car into the dealer and after a week of repairs, the same fault has occurred twice in the first 24 hours after return of vehicle. Fault occurred at 60 mph during a passing maneuver on a 2 lane road. Again, we were put in a very dangerous situation. This is an unsafe vehicle. Attached is a picture of the dashboard fault that I photographed after the car coasted to the side of the road. The car would not move until I turned it off and restarted.

While driving "collision prevention assist plus inoperative" message appears on dashboard. Car loses its ability to accelerate. Occurred twice (January 2015) on city streets forcing me to pull over to the side of the road and restart my car, the error disappears and I am able to drive normally. 4/7/16 occurred while traveling 65mph on an interstate. I lost ability to accelerate and was almost rear-ended by a semi-truck. The vehicle was serviced at a mercedes dealership on 1/11/16 the highway incident occurred after the "fix". It is currently back at the dealership being tested by the service department. I am told the current fix is to replace all the senors. I have opened a case with mbusa to repurchase the vehicle given the initial repair did not work and put me in perilous highway situation. I purchased the vehicle in October of 2015.

Two issues, purchased a certified pre owned vehicle. At 8900 miles, we noticed the car was idling very rough on a cold start, almost the sound of a diesel. The sound would resolve after 10 minutes of driving. Service informed us that there was a recall on the rods and pistons. We had the engine rebuilt, and the noise is the same, if not worse. The car sounds nothing like laterbuild '15 models or '16 models, nor does it run as smoothly. Secondly, 5 occurrences involved inoperative collision prevention assist warnings and inoperative anti-skid warnings appearing on the dash causing the car to reduce operating speed to 20mph max. Car needed to be shut off and restarted after a 5 minute period each time these warnings appeared, in order to drive over 20mph. The vehicle was serviced for these warnings twice. The first service diagnosed the car with a coding issue. The second, involved replacing modules. This all occurred during the two months of owning the car. We notices several similar complaints regarding the early build 2015 C300s, and decided to cut our losses and purchase another vehicle. We did not feel safe in that car.

Collision prevention assistance feature went on automatically ( as well as check-engine light) while driving at highway speed in normal weather. I was not in an accident, near another vehicle and completely aware and driving normally prior to this occurring. I had to struggle with car to pull over to shoulder, loss power from gas pedal, car hard to control. I had to turn off the car, deactivate the function to drive. It happened again when I drove the car later that day after the car had been parked for a while. Took it into service. They were able to find the error code. They found that mercedes sent out a memo in sept. 2015 stating they are aware of the problem but service is not to do anything to "fix" it! I have only owned this car for 6 weeks ,bought it new and have less than 6,000 miles on it. Mercedes is not offering a solution but more of a wait and see attitude.

Vibration at high speed around 70 m/h. Vibration during warm up after a cold start. Noise coming out from unknown parts possibly suspension when running over bumps at low speed around 7 m/h.

I had two issues within 2 months of buying the car earlier in this. I purchased the car in early Feb 2015. I heard a loud sound in the heating unit, then a small clicking sound ensued for over a week. Brought it in, the motor had blown, so they replaced it without a dime out of my pocket. Then in March, I was driving about 35 miles per hour when a very loud noise like bad breaks started and wouldn't stop no matter what I did. We towed it using mercedes, but had to pay for an uber to the dealership. It was again another malfunction with the new model, and they fixed the breaks and rotors that same day without a dime out of my pocket. I now have 6500 miles on it since I got it in Feb this year, and the check engine light came on. I tried to replace the fuel cap but that didn't make it go away and the car is driving fine. Im bringing it in later this week. I saw reports that there are some cars with this fuel issue thats causing this indicator. Overall this one particular car I leased is a total dud, but I hope these reports help others with similar issues.

I receive warning after I pass 5 mph speed if any of the passenger doors or trunk is open. The car needs to notify me as soon as it goes into drive mode. Manufacture's response has been quoted below. "we tested a C300 here. If the driver door is open, there is an immediate message when the vehicle is put in gear (forward or reverse). However, all other doors receive a message at approximately 5 mph. Mercedes-benz recommends that the driver make sure all passengers are in seatbelts and the doors are secured. ".